Package org.openjdk.jmc.agent.jfr.impl

Class JFRClassVisitor

java.lang.Object

org.objectweb.asm.ClassVisitor

org.openjdk.jmc.agent.jfr.impl.JFRClassVisitor

public class JFRClassVisitor
extends org.objectweb.asm.ClassVisitor

This class visits a class to be instrumented, discovers methods to be visited and visits them. It will also kick off the generation of the event class and register the created event class.

Field Summary

Fields

Modifier and Type	Field	Description
private final ClassLoader	definingClassLoader
private final Class<?>	inspectionClass
private final ProtectionDomain	protectionDomain
private final JFRTransformDescriptor	transformDescriptor

Fields inherited from class org.objectweb.asm.ClassVisitor

api, cv

Constructor Summary

Constructors

Constructor	Description
JFRClassVisitor(org.objectweb.asm.ClassWriter cv, JFRTransformDescriptor descriptor, ClassLoader definingLoader, Class<?> classBeingRedefined, ProtectionDomain protectionDomain)

Method Summary

Modifier and Type	Method	Description
private Class<?>	generateEventClass()
private void	reflectiveRegister(Class<?> generateEventClass)
void	visitEnd()
org.objectweb.asm.MethodVisitor	visitMethod(int access, String name, String desc, String signature, String[] exceptions)

Methods inherited from class org.objectweb.asm.ClassVisitor

getDelegate, visit, visitAnnotation, visitAttribute, visitField, visitInnerClass, visitModule, visitNestHost, visitNestMember, visitOuterClass, visitPermittedSubclass, visitRecordComponent, visitSource, visitTypeAnnotation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

transformDescriptor

private final JFRTransformDescriptor transformDescriptor

definingClassLoader

private final ClassLoader definingClassLoader

inspectionClass

private final Class<?> inspectionClass

protectionDomain

private final ProtectionDomain protectionDomain

Constructor Details

JFRClassVisitor

public JFRClassVisitor(org.objectweb.asm.ClassWriter cv,
 JFRTransformDescriptor descriptor,
 ClassLoader definingLoader,
 Class<?> classBeingRedefined,
 ProtectionDomain protectionDomain)

Method Details

visitMethod

public org.objectweb.asm.MethodVisitor visitMethod(int access,
 String name,
 String desc,
 String signature,
 String[] exceptions)

Overrides:

visitMethod in class org.objectweb.asm.ClassVisitor

visitEnd

public void visitEnd()

Overrides:

visitEnd in class org.objectweb.asm.ClassVisitor

reflectiveRegister

private void reflectiveRegister(Class<?> generateEventClass)
                         throws Exception

Throws:

Exception

generateEventClass

private Class<?> generateEventClass()
                             throws Exception

Throws:

Exception